<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<style>
			*{
				padding: 0;
				margin: 0;
			}
			html,body{   
				width: 100%;
				height: 100%;
			}
			body{
				background-color: pink;
				display: flex;
				flex-direction: row;
				justify-content: center;
				align-items: center;
			}
			.heart{  
				width: 200px;
				height: 200px;
				background-color: red;
				position: relative;
				transform: rotate(45deg); 
				animation: heartbit 1s alternate infinite;
				box-shadow: 0 0 30px red;
			}
			.heart::before{   
				content: "";  
				width: 200px;
				height: 100px;
				background-color: red;
				position: absolute;
				left: 0;
				top: -99px;      
				border-radius: 100px 100px 0 0;    
			}
			.heart::after{    
				content: "";
				width: 100px;
				height: 200px;
				background-color: red;
				position: absolute;
				left: -99px;  
				top: 0;      
				border-radius: 100px 0 0 100px;   
			}
			 @keyframes heartbit {
			 0% {
			 transform: rotate(45deg) scale(0.6);
			    }
			 100%{
			 transform: rotate(45deg) scale(1.4)
			    }
			 }
		</style>
	</head>
	<body>
		<div class="heart"></div>
	</body>
</html>